A coordinate tunable filter and a wireless communication front end circuit

A front-end circuit and coordination technology, applied in the adjustment of resonant circuits, parts of resonant circuits, electrical components, etc., can solve the problems of high hardware complexity, large chip area and power consumption, filter array area, cost and consumption. High power and other problems, to achieve the effect of low hardware complexity, low power consumption, and low manufacturing cost

Inactive Publication Date: 2009-12-02
IND TECH RES INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the size, cost, and power consumption of this filter array are large, which does not meet the current trend of communication electronics, thin, light, small, and power-saving.
[0019] Based on the above, the traditional wireless communication front-end circuit has the problems of high hardware complexity, large chip area and large power consumption, which does not meet the current trend of thin, short and power-saving communication electronic products.

Method used

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  • A coordinate tunable filter and a wireless communication front end circuit
  • A coordinate tunable filter and a wireless communication front end circuit
  • A coordinate tunable filter and a wireless communication front end circuit

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Embodiment Construction

[0114] In order to solve the problems of hardware complexity, area and manufacturing cost of traditional wireless communication front-end circuits, embodiments of the present invention provide a front-end circuit with a coordination adjustable filter. The hardware complexity, area and manufacturing cost of the front-end circuit are lower than those of the traditional wireless front-end circuit.

[0115] Please refer to Figure 4 , Figure 4 A circuit diagram of an embodiment of the invention is shown. The front-end circuit 40 includes a pre-filter 41 , an amplifier 42 and a post-filter 43 . The amplifier 42 is coupled to the pre-filter 41 , the post-filter 43 is coupled to the amplifier 42 , and the amplifier 42 is located between the pre-filter 41 and the post-filter 43 . The pre-filter 41 has an adjustable first center frequency and is used for filtering the received signal. The amplifier 42 is used to amplify the output of the pre-filter 41 . The post-filter 43 has an ...

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Abstract

The invention discloses a front end circuit with coordinate tunable filter, wherein the circuit comprises a first filter, an amplifier and a second filter; the amplifier is coupled to the first filter; the second filter is coupled to the amplifier; the amplifier is arranged between the first and the second filter; the first filter is provided with an adjustable first center frequency for filtering the received signal; the amplifier is used for outputting the first filter; the second filter is provided with an adjustable second center frequency for filtering the output of the amplifier, wherein, the first and the second center frequency is provided with an adjusting relationship of coordination.

Description

technical field [0001] The invention relates to a filter device and a wireless communication front-end circuit using the filter, and in particular to an adjustable filter device with coordination and a wireless communication front-end circuit using the filter. Background technique [0002] At present, the development of wireless communication technology brings great convenience to people's life. Users can surf the Internet or communicate with others outdoors or indoors with mobile devices. However, the entire wireless channel is full of signals of different frequencies. When the user wants to communicate with the wireless receiving terminal equipment, he must transmit the signal of the assigned frequency, and the signal of the assigned frequency must be aimed at when receiving. Only when the signal is received can the data be sent and received correctly. [0003] In the wireless communication front-end circuit, there are generally pre-filters and post-filters. The pre-filt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03J3/08H03J1/00H04B1/40
Inventor 郭建男施鸿源庞一心
Owner IND TECH RES INST
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